HIGH-POWER MEDIUM-VOLTAGE DRIVE POWER CELL

• US 20130100716A1
• Filed: 03/08/2012
• Published: 04/25/2013
• Est. Priority Date: 10/19/2011
• Status: Active Grant

• Current Assignee: Delta Electronics Company Limited (Delta Electronics Incorporated)
• Original Assignee: Delta Electronics Company Limited (Delta Electronics Incorporated)
• Inventors: Tong, Ai-Xing, GAN, Hong-Jian, Ying, Jian-Ping, Chang, Yu-Ming, Ma, Shao-Cai
• Granted Patent: US 9,019,731 B2
• Time in Patent Office: Days
• US Class Current: 363/37
• CPC Class Codes: H02M 1/32 Means for protecting converters other than automatic disconnection
• CPC Class Codes: H02M 1/325 with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
• CPC Class Codes: H02M 5/458 using semiconductor devices only
• CPC Class Codes: H02M 7/003 Constructional details, e.g. physical layout, assembly, wiring or busbar connections
• CPC Class Codes: H05K 7/20936 Liquid coolant with phase change

Abstract

The present invention provides a high-power medium-voltage drive power cell, which comprises: a rectifier module for rectifying the three-phase AC input voltage to get a DC voltage; an IGBT (Insulated Gate Bipolar Transistor) inverter bridge connected to capacitors for converting the DC voltage into an AC voltage of which the frequency, the amplitude and the phase are adjustable; a bypass module connected to the IGBT inverter bridge for providing the bypass function when the IGBT inverter bridge works in an abnormal state; and a heat pipe heat sink having a base plate on both sides of which power elements of the high-power medium-voltage drive power cell are disposed.

Claims

1. A high-power medium-voltage drive power cell, comprising:

a power element subunit, comprising;

a rectifier module for rectifying a three-phase AC input voltage to obtain a DC voltage;

an IGBT (Insulated Gate Bipolar Transistor) inverter bridge electrically connected to a capacitor subunit for converting the DC voltage into an AC voltage of which the frequency, the amplitude and the phase are adjustable;

a bypass module connected to the IGBT inverter bridge for providing the bypass function when the IGBT inverter bridge functions abnormally; and

a heat pipe heat sink having a base plate on both sides of which power elements of the high-power medium-voltage drive power cell are disposed; and

a capacitor subunit comprising capacitors and a housing, wherein the capacitor subunit is electrically connected to the rectifier module and the IGBT inverter bridge, thereby filtering the DC voltage rectified and then transferring the DC voltage filtered to the IGBT inverter bridge.

2. The high-power medium-voltage drive power cell of claim 1, wherein in the power element subunit, the IGBT inverter bridge is arranged at one side of the base plate, and the rectifier module and bypass module are arranged at the other side of the base plate.

3. The high-power medium-voltage drive power cell of claim 2, wherein the base plate comprises an air inlet end and an air outlet end;

the rectifier module is located at the air inlet end; and

the bypass module is located at the air outlet end.

4. The high-power medium-voltage drive power cell of claim 2, wherein the IGBT inverter bridge comprises two bridge arms, and each of the bridge arms has a plurality of IGBTs connected in parallel.

5. The high-power medium-voltage drive power cell of claim 1, wherein the capacitor subunit and the IGBT inverter bridge are arranged adjacent to each other, so as to shorten an electrical energy transfer distance and thus reduce circuit stray inductances.

6. The high-power medium-voltage drive power cell of claim 5, wherein the IGBT inverter bridge further comprises an IGBT bus;

the capacitor subunit further comprises a capacitor bus; and

the IGBTs and the capacitors are electrically connected via the IGBT bus and the capacitor bus.

7. The high-power medium-voltage drive power cell of claim 5, wherein the capacitor subunit is dismantably secured and connected to the power element subunit.

8. The high-power medium-voltage drive power cell of claim 1, further comprising a control module, wherein several sheet metal parts are arranged around printed circuit boards corresponding to the control module, thereby enclosing the printed circuit boards and implementing electromagnetic shielding.